Elevator-lock



(No Model.)

E. E. ANGELL.

ELBVATOR LOCK.

Patented Sept. 17, 1889.

N. PETERS, Phota-Lnhngmphm. wanhingmn. D. 1:.

UNITED STATES PATENT OEEICE.

EDVIN E. ANGELI., OF BOSTON, MASSACHUSETTS.

ELEVATO R-LOC K.

SPECIFICATION forming part of Letters Patent No. 411,274, datedSeptember 17', 1889. Application filed January 14, 1889. Serial No.226,246. (No model.)

To all whom it may concern..-

Be it known that I, EDWIN E. ANGELI., of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Elevator-Locks, of which the following is aspeciiication.

This invention has for its object to provide a simple, effective, andeasily-operated attachment whereby a merchandise-elevator may be lockedto and released from a collar on the rope which stops and starts theoperating mechanism; and to this end the invention consists in theimproved locking devices which I will now proceed to describe and claim.

Of the accompanying drawings, Figure l represents a perspective view ofan elevator having my improved lock. Fig. 2 represents a side view ofthe lock, its supporting-standard, and a portion of the starting andstopping rope. Fig. 3 represents a section on line a: a', Fig. 2. Fig. irepresents a section on line y y, Fig. Fig. 5 represents a sectiononline a a, Fig. 2. v

The same letters of reference represent the same parts and features inthe different drawings.

In the drawings, a represents the platform of an elevator or lift, andZJ represents the usual shipping-rope, which has collars c c', locatedat differentpoints, adapted to be grasped by locking devices supportedby the platform, the engagement of either of said collars by the lockingdevices while the platform is in motion giving the rope a movement whichstops the operating mechanism and arrests the motion of the platform ina mann er which is well understood and needs no particular description.

My improved locking devices comprise two jaws c2 c2, which are pivotedat d to a holder or casing c, said holder being attached to a verticalstandard f, which is attached at its lower end to the platform a. Theswinging ends of the jaws are curved, as shown in Fig. 3, and are formedso that when they are closed, as shown in full lines, the space betweentheir inner sides will be less than the diameter of the collars on therope; but when they are opened, as shown in dotted lines, said spacewill be greater than the diameter of said collars. The jaws are normallyheld in their closed position by springs g g, at-

tached to their outer sides and bearing against the inner sides of theholder c, said springs yielding and permitting the jaws to be opened.

7L represents a lever or key which is pivoted at c' below the jaws tothe holder e and projects upwardly through an opening c' between thejaws, said opening being formed by recessing the inner sides of thejaws. The said opening is wider than the thickness of the lever, so thatwhen the lever is thrown forward, as shown in Fig. 3 and in full linesin Figs. 2 and Il, it permits the jaws to be closed by the springs g g;but when the lever is thrown back, as shown in dotted lines in Figs. 2and 4, it comes between the cheeks or sides 2 2, which form a narroweropening communicating with the opening j, and by contact with said sidesforces the jaws apart to the position shown in dotted lines in Fig. 3.It will be seen, therefore, that when the jaws are held apart by the keyor lever h they are entirely inoperative, because the collars will passbetween their outer ends without engagement therewith. Each collar has atapered end et and a square or flat end 3, as usual. Vhen the jaws areclosed, they are adapted to engage any collar which is arranged with itssquare or fiat end 3 toward the advancing jaws, the closed ends of thejaws coming to a bearing on said square or iiat end, as shown in Fig.4., and giving the rope the movement required to stop the operatingmechanism. The collars are arranged in pairs, the collar c of each pairhaving its square end at the top and engaging the jaws during thedescent of the elevator, while the other collar c has its square end atthe bottom and engages the jaws during the ascent of the elevator, thejaws yielding when they encounter the tapered end of any collar whichpresents said tapered end to the advancing jaws and closing afterpassing over said collar.

The holder c is provided with two trumpetshaped tubes or guides 7a 7e,of sufcient size to receive the collars c c. The outer portions of saidguide are made in sections G, which are connected to the inner portionsby screws or bolts 7 7, passing through lugs 8 8, formed on therespective parts, as shown in IOO Figs.2 and 3. The lugs and bolts atone side may serve as hinges, so that the sections may be swungoutwardly to permit the insertion of the rope b into the guides, thebolts at the other end being removed to permit the displacement of thesections.

Each collar is split lengthwise at one side, so that it may be sprungupon the rope b, and is secured to the rope by a split clampingring 9,the ends of which are connected by a screw l0. The ring 9 is placed upona reduced portion of the collar, and is contracted by the screw l0 tobind the collar upon the rope.

I claiml. An elevator-lock composed of a holder or casing, a pair ofspring-closed separable jaws pivoted thereto, and a movable key or leverinterposed between said jaws, the latter being recessed at their innersides to receive the key or lever when the same is moved to one positionand provided with cheeks or surfaces 2 2,arranged to be displaced by thekey or lever when it is moved to anotherposition, as set forth.

2. The combination of the holder or casing provided with means forattachment to an elevator and provided with a rope guide or guides, thespring-closed jaws pivoted to said holder and having their free endsarranged to engage a collar on the shipping-rope, and the pivoted leverinterposed between the jaws, the latter having cheeks or surfaces 2 2,arranged to be displaced by a movement of the lever, vas set forth.

3. rlhe jaw holder or casing having the rope-guides 7c 7c, composed oftwo sections, one of which is formed on the casing and the otherdetachably connected and adapted to be displaced, as set forth.

In testimony whereof l have signed my name to this specification, in thepresence of two subscribing witnesses, this 10th day of January, A. D.1889.

EDWIN E. ANGELL.

Witnesses:

C. F. BROWN, ARTHUR W. CRossLEY.

